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Home /  Support Center /  Knowledge Base /  BR30 Bulbs

What is the difference between the Centric Daylight 5000K and Northlux 5000k bulbs?

What is the difference between the Centric Daylight 5000K and Northlux 5000k bulbs? What is the R9 rating for the Centric Daylight 5000k bulb? Also, do the 5000k bulbs give off a blue hue to them? 

The difference between the CENTRIC DAYLIGHT and NorthLux bulbs is that the NorthLux bulbs are calibrated to the D50 and D65 color standards which may be crucial for certain visual tasks. Both feature 95+ CRI and R9 values of 80+.

The 5000K lamps could certainly be perceived as being blue, especially during evening hours, and compared to incandescent and other warm white LED lamps. 

Here is an article going over some aspects of 6500K lamps, many of which would also apply to 5000K lamps:

Full Spectrum LED Bulbs for Small Aquariums

I saw your aquarium T8 tube on your site. I love your lights and hope to somehow use them on small aquariums. I was wondering if I could use your A19 or BR30 or LED strips that could be as close a comparison to the aquarium T8 tube as possible. So full-spectrum small lights, not tubes. I would really appreciate your advice on this. 

Our BR30 and LED strip light products also feature very high CRI (95+) and could very well be used for your aquarium!

I've included the product links below:

Recommended LED Bulbs for Retail Furniture Store

I own a furniture store and also sell home decor and gift items. My retail area is about 64 x 32 and has 15 ft ceilings. There are 7 ceiling lights and I sell and use lamps for ambiance lighting. I bought the building 2 years ago and have just now needed to replace a bulb in the ceiling light. They all currently have a fluorescent 55w 3800 lumens E26 bulb in an open fixture. My ceilings are black, walls are white, flooring is a medium gray, no dividing walls in the space. 

Based on the details that you provided, we might recommend our 4000K Full Spectrum E26 BR30 LED Bulb product. These items have a compatible E26 base, and offer a similar output as a 60W halogen, at 800 lumens per bulb. This product also features a higher CRI than your current products, at 95+. 

Further, we generally recommend the 4000K color temperature option for retail installations, which would offer a warmer color point than the 5000K product that you mentioned.

Recommended High CRI LED Lights for Art Gallery Lighting

I am a member of an artist-run art gallery. We have a new gallery space and would like to know what kind of lighting you recommend which would give us full spectrum color. We will want spots and perhaps tube lighting, all dimmable if possible. An architect friend recommended we get high CRI lights, at least in the 90s.

Based on the details provided, we might recommend our dimmable Full Spectrum E26 BR30 LED Bulbs. These BR30 products can provide a great full-spectrum high-CRI solution for track lighting systems.​

Regarding our tube light options, you might be interested in our NorthLux™ 95 CRI T8 LED Tube for Art & Studio product. Though these T8 LED tube lights are unfortunately not dimmable, they do offer a CRI of 95+ while being compatible with many fluorescent T8 fixtures.

Will 95 CRI BR30 6500K LED bulbs fit any fixtures?

I need help with proper lighting for the new salon. I know I need 6500k 90+cri. I see your artist bulbs are perfect. However, will those bulbs fit any fixtures, if not what kind do they comply with? 

We are happy to confirm that our NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio and NorthLux™ 95 CRI E26 A19 LED Bulb for Art & Studio products are designed to fit within any fixtures that utilize the standard E26 base. For reference, the E26 base is a common standard that you would likely see in the most floor and table lamps. 

​As such, these products should not require any specialized fixtures for operation.

Suggested Color Temperature for Residential Lighting

Is there a big difference between ordering the bulbs from you all and buying bulbs from Home Depot or Lowes? 

Also, Can you tell me what kelvin temp I would need for (recessed lighting in the kitchen, living room ceiling fan, entryway chandelier, and bedrooms)?

While there are many great LED products available on the market, our products have been designed to offer a higher CRI and better color consistency than much of what you will find available at Lowes or Home Depot.

The CRI listed within our product pages represents how similar the light is in quality to that of natural sunlight. While some LED products offer a CRI of 80, products such as our CENTRIC DAYLIGHT™ Full Spectrum Flicker-Free A19 10W LED Bulb offers flicker-free functionality and a CRI of 95+.

For living rooms and bedrooms, we generally recommend the 2700K option, whereas, for kitchens and dining areas, we would alternatively recommend the 3000K option. For recessed lighting, you might be interested in our 3000K Ultra High 95 CRI E26 BR30 LED Bulb for Home & Residential products.

For more information regarding the right options for each space, I have provided a helpful blog post from our website below which might prove to be useful for your planning purposes.

Which LED Light Color Temperature Should I Choose?:

Full Spectrum Clip-on Magnifying Light for Painting Studio

I need to buy a flexible clip-on magnifying light with full spectrum light for my painting studio. I was investigating some products that claim to have different levels of lighting. I read a lot on this site as I was not convinced that they provided the full spectrum needed for painting art. I like what I saw on your site but where do I get the fixtures that will accommodate your bulbs?

Based on our review of the best-selling magnifying LED lights for painting on Amazon, it appears that the majority of the results utilize embedded SMD LED panels that surround the product viewing lens. As such, it does not appear that our products could be installed within the majority of these items.

However, we are happy to offer several alternate lighting products which our customers have utilized within their studio spaces, including the NorthLux™ 95 CRI T5 LED Linear Light Fixtures, and the NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio product. That being said, neither of these products is directly comparable to the magnifying LED light mentioned.

Do your Avian LED Bulbs emit UV-A or UV-B?

I see that one says NO UV, and the other does not say one way or the other. It is my understanding that our Parrot Family birds do need Full Spectrum but that includes some UV-A and UV-B. 

We can confirm that these products are not designed to emit UV-A or UV-B, which can be noted on the lighting parameter analysis report link below for the A19 Avian bulb product. As such, it is entirely possible that specific avian families or breeds would benefit from specific adjustments to lighting, including the use of lights with a greater UV output. 

To this end, we might recommend reaching out to an avian specialist for specific instructions on creating ideal lighting environments for your parrots.

6500K A19 LED Product Report:

Specs Reports for 3000K BR30 bulb

Your website is missing the data sheet / photometric report for the following product: Full Spectrum E26 BR30 LED Bulb I would like to compare the 3000k options against this bulb, but need the datasheet/report to do so. Would you be willing to send this to me, and/or put it up on the website? 

We do not have the photometric report on hand but we will work on getting these published and sent to you shortly.

In the meantime, for a nearly identical comparison, we would recommend referencing our A19 lamp photometric reports for which a similar comparison of color temperature variants can be made:

Full Spectrum LED Lighting for Grocery Store Installation

I'm an architect looking for lighting that mimics daylight as closely as possible for a grocery store installation. 

We have attached two product links below that we believe might be a great fit for your grocery store installation.

As mentioned, please feel free to take advantage of our 30-day return policy for your order. If the products wind up not working well in the space, simply let us know and we would be happy to promptly issue a prepaid return label.

Full Spectrum E26 BR30 LED Bulb:

CENTRIC DAYLIGHT™ Full Spectrum Flicker-Free T8 LED Tube Light:

I have also attached a few blog posts from our website below, which might prove to be helpful for your planning purposes:

Difference Between 5000K and 6500K Bulbs:

Top 4 Things To Consider Before Buying 6500K Daylight LED Bulbs:

Everything You Need to Know About Full Spectrum Lighting:

BR30 vs A19 Bulbs for Artist Studio Space Lighting

I want to use the NorthLux 95 CRI E26 A19 LED bulbs in track lighting for a small space of 5 x 6 feet. How many bulbs would you recommend? Can you recommend a source or fixture that would be appropriate for the space?

Based on the details provided, we estimate that your 5x6 space would benefit from roughly 2,389 lumens to be properly illuminated for artwork creation.

As each of the NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio products offers 800 lumens, we estimate that three bulbs could work well for the track lighting in your studio.

While there is not a specific light fixture that we could recommend, it might be helpful to know that our BR30 products are compatible with the standard E26-base track lighting systems that you might find in your local hardware stores.

Are there pros and cons to ordering the NorthLux 95 CRI E26 A19 LED Bulb instead? I see it is not dimmable, and the BR30 bulb is dimmable, but otherwise, I don't understand how they would differ in application. Can I use the E26 fixture with this also?

We're happy to confirm that the A19 bulb is compatible with E26 fixtures and that the performance will be largely the same as the BR30 bulb. The primary benefit offered by the BR30 bulbs is the narrow beam angles, which can be quite useful for track lighting systems with directional lighting.

However, if the NorthLux™ 95 CRI E26 A19 LED Bulb for Art & Studio product winds up not working well in your space, it might be helpful to know that we have a 30-day return policy. Simply reach out to let us know, and we will issue a prepaid return label. 

5000K Lighting for Oil Painting Studio

I just found your website and would like to purchase an LED tube light for my oil painting studio, but noticed that your NorthLux™ 95 CRI LED Shop Light Fixture is sold out until 2-1-21. This sounds like the best option for me, but could you recommend an alternative? I'm noticing that you have T8 bulbs that would work with a regular fluorescent fixture. Could you point me to a fixture that would work well with these bulbs? Or is the NorthLux™ 95 CRI LED Shop Light Fixture a much better solution because of the diffuser and the integrated LED tubes? I'm interested in 5000K, but maybe you could suggest why I would want to go to 6500K?

We can confirm that our LED Shop Light Fixture is a great option for your lighting needs. You may take advantage of our 30-day return policy if you would like to try the product in your studio.

We can also confirm that our T8 LED tube light products can be utilized in any existing T8 fixture, though we do recommend installing these products within fixtures that do not utilize ballast or bypass the ballast entirely. More information about these installation types can be found on our T8 product specification sheet, which I have linked below.

Specification sheet link:

We also have a terrific article on our website which describes the differences between 5000K and 6500K in detail, which might prove to be useful in your planning.

Difference Between 5000K and 6500K Bulbs:

Do you sell 5000K light bulbs for track lighting? See attached image. I probably need to get you some sort of code off the bulb itself. See attached image.

Based off of the photo that was shared, it appears that the lights within your track system are BR30 bulbs​.

We're happy to confirm that we sell the 5000K Full Spectrum E26 BR30 LED Bulb products, which are often installed within similar track lighting systems. This product also features compatibility with dimmers.

Is the BR30 LED Bulb rated for use in recessed fixtures?

Is the “Ultra High 95 CRI BR30 LED Bulb” 4011.30/4011.40 rated for use in recessed fixtures (ceiling cans)?

The BR30 lamps can safely be used in the ceiling can fixtures as long as they are not sealed off. They are unfortunately not rated for enclosed fixture use.

BR30 LED Bulbs for Residential Installations

I am very impressed with your products and I'm looking to see if buying from you would be a viable option. We are renovating our whole house and need lights for every room. We have 4" and 5" recessed lights. The kitchen, dining, and master bed and bath have 15 ft ceilings. 

Our BR30 lamps sound like a great option. The BR30 lamps have a 3.75" diameter, so they should be a nice fit for both the 4" and 5" ceiling fixtures that you have.

​We would also recommend installing enough bulbs to achieve sufficient brightness levels for your space. You may find our lumen estimation calculator helpful in determining the lumen needs:


​Finally, in choosing color temperature, the 3000K is the most popular and recommended option for residential installations. Higher color temperatures (4000K and above) can be useful for art and photo studios where daylight calibrated light is useful.

​Please see below for the 3000K product link:

High CRI and R9 Lighting for Textiles and Leather

I make handbags that incorporate textiles and leather. I need to get accurate color when photographing my pictures. I am taking pictures myself and am not a professional photographer. Is there any LED lighting that you can recommend? I’m taking pictures indoor. I also have an adapter that can fit LEDs into a soft box. I’ve tried natural light but I’m trying to get consistent pictures for my online website. 

Based on the details provided, there are a few products that we might recommend depending on your ideal installation method.

The primary product that we might recommend is the 99 CRI ABSOLUTE SERIES™ LED Flexible Strip product. This product feature light which is virtually indistinguishable from natural daylight, which could prove to be useful with your photography.

Alternatively, in the event that you would prefer to use traditional light fixtures, we might recommend our NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio products. However, please note that this product is currently backordered.

As a final recommendation, our NorthLux™ 95 CRI T5 LED Linear Light Fixtures can be easily mounted in multiple configurations, and contain integrated lighting within the product housing, which reduces the amount of required accessories.​

Recommended LED Lights for Breeding Dogs

I have breeding dogs in 5 x 5-foot dog kennels in a shop with 20-foot ceilings, which have 4ft 4 bulb lighting across the whole ceiling. The room is approximately 60 ft x 72 ft with the kennels occupying about 20 x 30 ft long along one wall. What lights should I use? Should I install a light shield over the tops of the kennels to defer the ceiling lights when the shop is being used regularly on our farm? Is this going to have a noticeable effect considering the ceiling lights? 

While lighting applications for animal health are beyond the scope of our expertise, we would be more than happy to assist with general recommendations for creating a lighting environment that best mimics natural light.

We would perhaps suggest starting with a target illumination level of 150 footcandles. This would require approximately 3700 lumens per 5 x 5 ft kennel.

Our most popular product is our flicker-free T8 LED tube lights. These lamps can be housed in 4-ft lamp fixtures and feature flicker-free, full-spectrum light output at 95 CRI. Please see below for the product link:

Each lamp emits 1800 lumens, so for each kennel, you will want to use two or more lamps per kennel.

Alternatively, our BR30 lamps can also be used if you have standard, circular ceiling fixtures:

These lamps emit 800 lumens each, so you will want to use approximately 5 lamps per kennel.

High CRI 2700K BR30 LED Bulbs

We need 2700K High CRI in BR30 format for bedroom installation, yet I noticed you don't offer that. Any chance you’ll release a 2700k version? 

Unfortunately, we no longer offer the 2700K color temperature option for our BR30 bulbs at this time. We apologize! 

Full Spectrum BR30 Bulbs for SAD and Home Lighting

I am looking to replace our whole home can lights with full spectrum bulbs to combat SAD and boost the health of my family. We live in Oregon and have limited sunlight exposure. I am trying to decide between your Ultra High 95 CRI E26 BR30 LED Bulb in 3,000K and your Full Spectrum E26 BR30 LED Bulb in 4,000K. Are they both suitable for whole-home use? Are they both full spectrum and beneficial for light therapy/heliotherapy? 

Since both items come from the same product family, which can be noted by the shared part numbers, the full spectrum features and performance will be identical across the two items. As such, both products would be suitable for home use. The only differentiator between the two can be found in the color temperature options available.

Generally speaking, the intended purposes of different spaces or rooms can help to define the proper color temperature selection. For example, general-purpose areas might benefit from the warmer 3000K color point, whereas kitchens and work spaces might benefit from the slightly cooler 4000K option.

Our website features some excellent blog posts which I have linked to below, which could prove to be useful in your selection:

Blue Light, Melatonin, and Circadian Rhythms:

Everything You Need to Know About Full Spectrum Lighting:

We are also happy to offer a 30-day return policy if the selected items don’t work well for the space. Simply let us know which items you would like to return, and we will issue a free return label. 

Could you clarify, if the effectiveness of light therapy is the same between 3,000K and 4,000K? Or is one more effective than the other? After reading this blog post, I see “light therapy” is listed for 4,000K but not for 3,000 K. 

While both color temperature options of this product feature the same high CRI and therefore would share extremely similar health benefits, the 3000K color temperature would likely be more beneficial than the 4000K.

We have two great articles on our website that go into further detail regarding the health benefits of certain color temperatures, which could be valuable in your decision-making process.

Are LED Lights Safe? Are They Harmful to Your Health?:

Blue Light, Melatonin, and Circadian Rhythms:

What is the difference between the 5000K BR30 Bulbs?

What is the difference between NorthLux (5000K) and Full Spectrum (5000K)?

Thank you for reaching out! Both the NorthLux BR30 5000K and Full Spectrum BR30 5000K lamps are the same product (part number 4011.50) listed on different product pages for marketing purposes.

We apologize for any confusion caused!

Difference Between the BR30 Bulbs

Other than color temperature, what is the difference between the Ultra High, Full Spectrum, and the NorthLux 95 CRI BR30 LED Bulb? I'm about to move into a large studio condo and am considering my lighting options. In my previous places, I've used SoLux 4700k 12V MR16 halogens and loved their light, but they are not compatible with our fixtures. 

We can confirm that the color temperature options available are the only differences between the three products referenced, as they are of the same product family. This can be noted by the shared part number on each product page.

However, each product offers the same benefits of full spectrum, high CRI lighting, as well as a low flicker rate.

We do apologize for any confusion which may have arisen, as these products are displayed on multiple pages for marketing purposes.

Difference in perceived brightness between A19 and BR30 LED Bulbs

Could you tell me if there is a difference in the perceived brightness, by beamspread, etc between the NorthLux™ 95 CRI E26 A19 LED Bulb for Art & Studio and the NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio? 

Due to the 120 degree beam angle of the NorthLux™ BR30 bulbs, these products would indeed appear to emit a brighter and more focused light than the NorthLux™ A19 bulbs, even though both products technically offer the same 800 lumen output.

That being said, we are also happy to offer a 30 day return policy in the event that you would like to purchase both items in order to make a direct product comparison.

Flicker-free and Non-dimmable Recessed Light Bulbs

I see you have the BR30s but do you know where I can get the Zero flicker, non-dimmable recessed light bulbs?

We unfortunately are not aware of any BR40 lamps that feature flicker-free light output.​One alternative would be to consider our BR30 lamps, which have a 3.75 inch diameter. The gap between the lamp and the ceiling fixture rim may be on the larger side, but the lamps will fit in the fixture without any issues.

High CRI LED lighting for Photographic Printmaking

I am a professional printmaker for photographers who sell their work in galleries. I also produce prints for museum exhibits and corporate photography installations. I am building a new print-making studio. I would like high CRI lighting for my print viewing/color-correcting area. I need 5000K Hi CRI (95 or higher) for color correcting as well as 2700K and 3000K high CRI to view prints for how they will look under gallery or museum lighting. I would prefer to have one light source to be able to produce all three color temperatures. Each color temperature would be used one at a time. Which of your products would work best for my application?

Our high CRI LED lighting offerings sound like a great fit for both the color viewing (D50 / 5000K) as well as gallery/museum lighting conditions (2700K/3000K).

​Unfortunately, we do not offer any products that feature the ability to switch between those color points, so we would instead recommend installing separate lamps for each of the color points needed.

​For the D50 / 5000K color point, our line of NorthLux or D50 products will work well for your needs. For example, please see below for our A19, T8 lamp or T5 fixture options:

Our 2700K and 3000K are a bit more limited in form factors. Below is our A19 and BR30 lamp option:

If you can let us know a bit more about the lighting installation in terms of fixtures and location, we'd be glad to assist with some additional recommendations and guidance!

Will your T-8 NorthLux 95 CRI LED tubes operate with a dimmable ballast allowing me to dim the output and still maintain the same color temperature and color rendering index?

Unfortunately our T8 LED lamps are not dimmable, and will not work with a dimmable ballast. Sorry for the bad news!

Do BR30 and A19 bulbs dim properly with older-style dimmers that adjust voltage?

Do BR30 and A19 bulbs dim properly with older-style dimmers that adjust voltage? Do the bulbs make a humming noise when dimmed with the older-style dimmers?

We can confirm that our A19 and BR30 lamps are designed for use with modern phase dimmers. However, they are not designed for use with older dimmers such as rheostat dimmers.

As such, these products may not be compatible with the dimmers that you have installed. We might recommend reaching out to a local lighting expert for further specialized instruction regarding compatibility.

LED Lighting Suggestion for Small Townhome of 1200 sq ft

Could you suggest a type of LED lighting for a small townhome ~ 1200 sq ft? I have 9 led lights in my downstairs and the room takes a pink/peach hue. I have white walls and want everything crisp, but cannot find a good brand or light.

Our high CRI LED lights should be a great fit for your home.

The first step in determining your lighting needs would be to understand the amount of brightness and the number of lights needed. Based on the square footage provided, we ran some quick calculations using our lumen estimation calculator ( which suggests approximately 26,000 lumens as your target brightness level.

​We would further recommend a 3000K color temperature which will provide your residential space with a comfortable but crisp white, light.

Do you have a recommended dimmer to minimize flicker while dimming?

I installed new recessed lighting and looking for quality LED bulbs with matching dimmers. I'm personally sensitive to color and flicker gives me headaches. I'm looking at the 4011.30.6P. It shows a flicker of 6%. Is this low flicker amplitude maintained while dimming. It appears Lutron and Leviton dimmer are mentioned as compatible. Any particular dimmer recommendation to minimize flicker while dimming?

We ran a series of dimming tests using a Lutron CTCL-150 and confirmed that the flicker performance is indeed best at or near 100% brightness, where we observed ~7% flicker and 0.02 flicker index.

As the brightness setting is decreased, flicker percentage increases to ~11% with 0.03 flicker index. Given that traditional incandescent lamps exhibit flicker rates of 15% and higher, this performance is in line with, or exceeds that of traditional incandescent lamps and should not present any issues for most residential installations and applications.

Attached are the test results as well as a plotted chart of the results.


Do you think the performance will be similar over the full line of Lutron LED+ dimmers or do you think this will vary substantially from one dimmer model to the next?

We've just repeated the test with the Lutron TGCL-153PH series dimmer and saw the same results (7-11% from high to low).​While we wouldn't be able to draw any conclusions from just these two tests, we now do possess two sets of data points for Lutron performance which may give us some further confidence regarding dimming performance across brightness settings.

Are these BR30 bulbs available in 2700K?

The product data sheet indicates the bulb with the part number 4011 is available in a 2700k, but I cannot find these on your website. Are these bulbs available in 2700k? 

Unfortunately, we no longer offer the BR30 LED bulbs in the 2700K color temperature.

Are there any known health hazards using red phosphors in the bulbs?

I am outfitting my home with waveform-led bulbs. I was wondering if your bulbs give off UV rays to the occupants. Are there any known health hazards with using red phosphors in the bulbs? I am buying PN 4011.40, PN 4002.30 PN 4011.30 I am hoping that all your lights have reduced blue spectrum and are safer than the typical LEDs at hardware stores. I know that your lights carry the CE rating but are not UL listing. 

Our bulbs do not emit any UV rays, and all emitted electromagnetic waves are longer than 430 nanometers.​There are no known health hazards with red phosphor wavelengths as their peak wavelengths are at 630 nanometers or longer.

These photometric properties apply to all of the PN 4011 and 4002 product lines. For reduced blue light output, we would generally recommend high CRI and low color temperature lamps as they will generally offer the best mix of wavelengths to reduce blue light exposure.

Are NorthLux™ 95 CRI T8 LED Tube for Art & Studio Dimmable?

Are these dimmable? NORTHLUX 95 CRI T8 LED

Unfortunately, the NorthLux™ 95 CRI T8 LED products are not compatible with dimmers.

Just need to know which LED lamps you have that are dimmable and are at least 5000K

We can recommend our Full Spectrum E26 BR30 LED Bulb product, which is dimmable and available in the 5000K color temperature.

Here is the product link:

LED Home Office Lighting: Best Color Temperature that Mimic Sunlight

I am trying to mimic "sunlight" in my small home office now that the days are getting shorter. The closest thing to my desired lighting that I have experienced is dental overhead lights. I recently purchased a FilmGrade A19 LED bulb, but it felt a bit cool to me. I realize that natural daylight sits in the 5600K to 6500K color range. 

1) Do you have suggestions for which of your A19 or BR30 bulbs may best fit my use case? 

2) Am I always going to find "natural daylight" options a bit too cool? Would 4000K or 5000K offer a better experience? 

Getting the correct color temperature is indeed a challenge!

​You are correct that the 5000K to 6500K range is generally considered a good match for natural daylight. 4000K is also a nice option, and you may find some useful information on our blog post here.

​One thing to keep in mind that oftentimes, natural daylight color temperatures can appear a bit blue or stark when you do not have enough brightness overall. To that end, if you have any information on the total square footage being illuminated, we may be able to provide some additional recommendations on the quantity of lamps needed to provide sufficient brightness at that color temperature.

We would perhaps recommend taking advantage of our free returns policy to test and compare the various color temperature options and lamp quantities. Once you've made your mind, just let us know and we'd be glad to pay for return shipping and refund you for any returned items. 

Do you have BR30 bulbs in 2700K Color Temperature?

Do you not offer the BR30 bulbs in 2700K color temps? The data sheet seems to indicate that you do.

Unfortunately, we no longer offer the BR30 bulbs in the 2700K color temperature.

I am ready to purchase your 3000K flood lights and regular A19 bulbs to retrofit all the existing fixtures in my home. How tightly controlled are your color temperature and CRI values for each of your bulbs, and can I select a particular binning range given that my order will be over $1000?

At Waveform Lighting, we take great care in ensuring the consistency of the products that we offer. This process includes having a very narrow tolerance for variations in the quality of light being emitted by our lighting products.

All of our products are manufactured using single-bin production. Even so, we would be more than happy to provide you with an order containing items originating from the same production batch to be extra sure of color consistency.

Difference between Northlux and Full Spectrum BR30 Bulbs.

Could you please tell me what differences to expect between a 5000K Northlux BR30 bulb and a 5000K Full Spectrum BR30 bulb? 

The NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio lights is the same product as the Full Spectrum E26 BR30 LED Bulbs. As such, there are no differences between the two products.

We do apologize for any confusion caused as the product is shown on multiple pages for marketing purposes. This can be noted by the shared part number listed in the item description for both products.

Are BR30 Bulbs Compatible with a Legrand Tru-Universal Dimmer?

I have a new job that's interested in your products. I remember the last time, I returned some products because they weren't dimming correctly. Can you confirm that the BR30s are compatible with a Legrand Tru-Universal dimmer and that they don't buzz audibly when dimmed?

We, unfortunately, do not have any test data on that particular dimmer model this time.

In the meantime, if you're in a rush to decide on the installation, we would recommend purchasing a sample set of bulbs to test and see if they work well and provide the lighting performance you are looking for. If it doesn't work out, we'd be glad to pay for return shipping and provide a full refund.

I thought the A19s used to be dimmable. Did that change?

The A19 filament bulbs are dimmable, but the 10-watt A19 bulbs are not. Please see below for the dimmable A19 filament bulbs:

LED Bulbs for Art Studio with Track Lighting System Compatibility and E26 Base Standard

I'm trying to choose between 2 of your wonderful products to light my art studio. I have 2 rows of track lights with E26 Edison sockets. I'm not sure if I should get the regular bulb (NorthLux™ 95 CRI E26 A19 LED Bulb for Art & Studio) or the floodlight version (NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio). 

We can confirm that both our NorthLux™ 95 CRI E26 A19 LED Bulb for Art & Studio and NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio bulbs are compatible with track lighting systems that utilize the standard E26 base.

Regarding the differences between the two products, the BR30 does offer a narrower beam angle than the A19 bulb. Other customers have let us know that this feature has been beneficial for their track lighting fixtures.

R9 Specs for the 3000K Ultra High 95 CRI E26 BR30 LED Bulb

A couple of questions:

1. I’m not seeing the R9 claimed in the specs. A red apple does not look right compared to incandescent lighting 

2. Will you have 2700K in R30 bulb?

The R9 specification for the 3000K Ultra High 95 CRI E26 BR30 LED Bulb for Home & Residential product is 80+.

Regarding the color temperatures available, we currently do not have plans to offer this product in 2700K. That being said, I would be more than happy to pass along your interest in this product to my team.

Full Spectrum E26 BR30 LED Bulb Specs and R9 value

I would like to know the specs (including R9 value) for your Full Spectrum E26 BR30 LED Bulb.

For our 3000K and 4000K, our recently measured R9 values were 90 and 97, respectively. Please let us know if we can assist with anything else!

Recommended bulbs for Studio Lighting

I need assistance with LED lights choosing the correct bulbs for my art studio and how should setting up my lights for my application. I want to be able to render pencil/charcoal/and paint with the lights. I will be using 8ft ceilings unfortunately but do not currently intend to do many large paintings so hopefully, I will have enough height. I was personally thinking of your 5000K LED Art Studio Tubes or the LED 5000k bulbs but I was not sure if tubes or bulbs made more sense. And if I get either the tube or the bulb what fixtures to mount them with and what wiring info? 

It does indeed sound like our NorthLux LED products with 95 CRI and daylight-calibrated color temperatures will be an excellent option for your space.

You are correct that you're in perhaps one of the more tricky stages of planning your lighting, and we'd be more than happy to offer some recommendations.

​The first question would be to determine what kind of fixtures (if any) you would be interested in utilizing in the space. For BR30 lamps, for example, you will require residential/commercial style recessed can lights, which typically will go directly into the ceiling, meaning there will be some construction and electrical work needed.

​With the tube lights, you can also consider similar ceiling fixtures such as 2' x 4' fixtures, but there are also options such as strip light fixtures and other ceiling mount fixtures that won't require as much involved construction or electrical work.

One of our new products that might be most convenient and the best fit for you would be our integrated T5 LED linear fixtures. These lights have the same 95 CRI NorthLux LEDs inside, but also include screw or magnet-based mounting systems, which means that you do not need any additional accessories or electrical work. They simply plug into a wall outlet, and can also be daisy-chained to connect multiple fixtures.

I've included the product link below - please let us know your thoughts!

Do you have to daisy chain the end of the light to end or can you use a jumper wire to set the lights up parallel to each other? 

You can daisy chain them end-to-end, or they can be connected using a daisy-chain wire. See below:


Have you had the artist install the NorthLux 95 CRI BR30 LED bulbs in adjustable lamp track lighting? Like gallery Style? Would you recommend a track lighting system or a tube light system for an oil painting studio with an 8 ft ceiling?

The BR30 lamps are generally used in ceiling fixtures (e.g. recessed can light) and not track light fixtures. One of the concerns is that the BR30 beam angle is very wide and spread out, making them less suitable for track light fixtures which generally are designed for narrow beam angle spotlights generally seen, as you mention, in gallery settings.

For art studios, the tube lights would definitely be a great option, as they can provide full and evenly distributed light coverage. 

To get a sense of how much light you will need, we would recommend using our Lumen Estimation Calculator, which can be found at the link below:

Do you think if you used the BR30 bulbs with the track light fixtures you could get a wider distribution of light from the track light system giving you the wide soft light without hotspots but also being very adjustable in where you direct the lights? 

If adjustability is an important feature, the track system may indeed work well for your needs! The LED strip lights are quite permanent and fixed in place, so that would definitely be a big downside.

Will your Full Spectrum E26 BR30 LED Bulb fit in the 4" cans?

I have 4" cans ready to be installed, and I want to purchase your Full Spectrum E26 BR30 LED Bulb 4011.50. Will the bulbs fit in the 4" cans?

Our BR30 lamps have a diameter of 3.75 inches at their widest point.​Since you have 4-inch can lights, you should not have any issues. The one thing to check for, however, may be any baffles or other accessories that may obstruct the lamp if they do not allow for an opening of 3.75 inches or wider.

Which of your lighting systems would you recommend for two months old lovebird?

I just got a new baby Lovebird that is about two months old. During the fall and winter, I want to give him adequate light that is as natural as possible so he can be happy and so his body can produce the nutrients it needs. Which of your lighting systems would you recommend? Do you have some kind of kit that would fit inside or above his cage that is simple to set up?

Currently, we are only able to offer individual bulbs for sale and we do not any have kits or complete solutions. If you have any existing lamps or fixtures, our lamps would be a great option to replace any old or burned out lamps, but if you are starting from scratch, you may want to check with some specialty pet supply sellers.

Below are the two lamps we currently offer:

Can you suggest a 5000K bulb with about 1600 lumens in a BR30 fixture for my studio?

I have a small area that I use for a studio and have a BR30 fixture about 9 feet above my easel. I would like a 5000K bulb with about 1600 lumens with good color. Can you suggest a product?

Unfortunately we do not offer any lamps with 1600 lumens, and the closest option would be our BR30 lamp which puts out 800 lumens at 5000K and 95 CRI. Please see below for the product link:

Does the NorthLux™ 95 CRI BR30 LED Bulb fit an E27 or E26 base?

I have a question about NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio. Does it fit an E27 or E26 base? The product page doesn't say.

The NorthLux BR30 lamps have an E26 base. Therefore, we would recommend using it with E26 base lamp fixtures only.

Do you have a 2700K version of the BR30 LED Bulb?

Your product page mentions the 2700K version of the BR30 LED Bulb, but I can't select 2700K in the Color Temperature dropdown. Do you know when the 2700K BR30 LED Bulb will be available again for purchase?

Unfortunately, we no longer offer the 2700K color temperature for our BR30 LED bulbs.

That being said, depending on your installation we might suggest our 2700K CENTRIC HOME™ Full Spectrum Flicker-Free A19 10W LED Bulb as an alternative. 

Here's the list of 2700K products that we currently offer:

I am a painter and cannot simply change the bulbs. Do I need to order bulbs and a different fixture, or just buy a full fixture from you?

I am a painter with a small (about 3.5 m by 1.5 m) space where I paint. It's a sunroom and has amazing natural light, but I have been struggling to paint at night. Due to uninteresting reasons, I cannot simply change the bulbs- and I am thus going to replace the entire fixture. Do you think it would make more sense to order bulbs and a different fixture or just buy a full fixture from you?

We may recommend utilizing our bulbs within another replacement lighting fixture, as the current fixtures we offer are not dimmable.

If your replacement fixture accepts BR30 bulbs, we would be happy to recommend using our NorthLux™ 95 CRI BR30 LED Bulb for Artwork & Studio. We recommend this product because it has dimming capability, offers a high CRI, and emits light that is similar to daylight.

This product has two color temperature options, 5000K and 6500K. 5000K will have a neutral daylight color point, while the 6500K has a color point similar to full daylight. You may find that one option is better suited for your space than the other.

Are E26 Light Bulbs Interchangeable?

I have a fixture that came with a 14 watt E26 standard Medium base CFL bulb. Can I replace these with dimmable LED bulbs?

Based on the description provided, we believe that the following bulbs may work in your fixture, as both are dimmable and have a power consumption under 14 watts.

1. Ultra High 95 CRI E26 A19 5W LED Filament Bulb for Home & Residential

2. Ultra High 95 CRI E26 BR30 LED Bulb for Home & Residential

95 CRI light that can change from 5000K to 6500K - used for painting

I want to buy a light that has 95 CRI and ideally can change from 5000K to 6500K. The function is for painting and I want to know what kind of lamp fixture I need to buy to use a light of yours. I would prefer a floor lamp because my table is crowded with my paper and paint materials.

While we currently do not offer lighting products which can adjust between the 5000K and 6500K color temperatures, we do offer many 95 CRI products which can be used in a wide variety of lighting fixtures, from floor lighting to track lighting.

For example, some customers who use our products for illuminating their canvases or artwork spaces have chosen to utilize floor lighting fixtures which are directional.

These customers have utilized our NorthLux™ 95 CRI BR30 LED Bulbs for Artwork & Studio, which are available in both the 5000K and 6500K color temperatures. 

Can these bulbs be used in most floor lamps?

Regarding power requirements, our BR30 lamps also require 120V AC to operate.

Do you have a BR30 or PAR30 bulb that has lower blue light?

I'm looking for a BR30 or PAR30 bulb that has lower blue light. The 2700K seems to fit the bill, but I don't see it on your website anymore. Are you planning to sell more of these in 2700K?

Unfortunately, we do not have any 2700K BR30 bulbs at this time, and do not currently have plans to manufacture them.

In the event that your space would specifically benefit from the 2700K color temperature, the Ultra High 95 CRI E26 A19 5W LED Filament Bulb for Home & Residential may be an option.

However, if you require the narrower focused light output of the BR30 bulbs, we do offer the Ultra High 95 CRI E26 BR30 LED Bulb for Home & Residential in 3000K, which is a bit cooler, but similar to the 2700K color temperature specified

Can I use an E26 BR30 bulb in a recessed ceiling fixture (no covering)?

Can these bulbs be used in a typical recessed ceiling fixture? There is no cover, so the bulbs will not be fully enclosed. I really want to change the lighting and feeling down here in the basement and I'm hoping these full-spectrum lights will help.

We can confirm that the BR30 E26 LED bulbs generally fit into recessed ceiling light fixtures, so long as the fixture is designed to accommodate the E26 base.

Please note that these lights do require airflow for proper heat dissipation. So long as these bulbs are not being covered by an enclosure, they should not experience overheating.

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